Greetings! Thank you so much for the reply.
I will get to all of your suggestions when I can. For now, I only had time to create a test project and look at Galv's layers.
I created a brand new project with no other plugins but galv's layers and the MK minimap + MK GalvLayerSupport, and unfortunately I still cannot get any layer displayed on the minimap. I think there may be an issue with the compatibility plugin. I just did a quick test where I created a layer in Clip Studio of a couple buildings, exported it, and added it as a Z layer 1 layer above the base. I know Galv is working because I see the buildings, but nothing is displayed on the minimap, just the in-engine placed ground layer.
I will work on the other things tomorrow, thank you again and I hope to get your minimap plugin working because I think it will be an excellent addition to my game here.